Add missing `@Nullable` to setters of Nullable Fields

There are setters and builder methods that initialize members that are
`@Nullable` but do not accept `@Nullable` parameters.

For example:

```
private @Nullable Object foo;

public void setFoo(Object foo) {
    this.foo = foo;
}
```

It is an unnecessary restriction that the parameter is unable to be null
since the field can be null.

This commit fixes these inconsistencies.

Closes gh-18618

core/src/main/java/org/springframework/security/authorization/RequiredFactor.java

@@ -122,7 +122,7 @@ public final class RequiredFactor {
 		 * @param authority the authority.
 		 * @return the builder.
 		 */
-		public Builder authority(String authority) {
+		public Builder authority(@Nullable String authority) {
 			this.authority = authority;
 			return this;
 		}
@@ -205,7 +205,7 @@ public final class RequiredFactor {
 		 * @param validDuration the {@link Duration}.
 		 * @return
 		 */
-		public Builder validDuration(Duration validDuration) {
+		public Builder validDuration(@Nullable Duration validDuration) {
 			this.validDuration = validDuration;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/AuthenticatorAssertionResponse.java

@@ -155,7 +155,7 @@ public final class AuthenticatorAssertionResponse extends AuthenticatorResponse
 		 * @param authenticatorData the authenticator data.
 		 * @return the {@link AuthenticatorAssertionResponseBuilder}
 		 */
-		public AuthenticatorAssertionResponseBuilder authenticatorData(Bytes authenticatorData) {
+		public AuthenticatorAssertionResponseBuilder authenticatorData(@Nullable Bytes authenticatorData) {
 			this.authenticatorData = authenticatorData;
 			return this;
 		}
@@ -165,7 +165,7 @@ public final class AuthenticatorAssertionResponse extends AuthenticatorResponse
 		 * @param signature the signature
 		 * @return the {@link AuthenticatorAssertionResponseBuilder}
 		 */
-		public AuthenticatorAssertionResponseBuilder signature(Bytes signature) {
+		public AuthenticatorAssertionResponseBuilder signature(@Nullable Bytes signature) {
 			this.signature = signature;
 			return this;
 		}
@@ -175,7 +175,7 @@ public final class AuthenticatorAssertionResponse extends AuthenticatorResponse
 		 * @param userHandle the user handle
 		 * @return the {@link AuthenticatorAssertionResponseBuilder}
 		 */
-		public AuthenticatorAssertionResponseBuilder userHandle(Bytes userHandle) {
+		public AuthenticatorAssertionResponseBuilder userHandle(@Nullable Bytes userHandle) {
 			this.userHandle = userHandle;
 			return this;
 		}
@@ -185,7 +185,7 @@ public final class AuthenticatorAssertionResponse extends AuthenticatorResponse
 		 * @param attestationObject the attestation object
 		 * @return the {@link AuthenticatorAssertionResponseBuilder}
 		 */
-		public AuthenticatorAssertionResponseBuilder attestationObject(Bytes attestationObject) {
+		public AuthenticatorAssertionResponseBuilder attestationObject(@Nullable Bytes attestationObject) {
 			this.attestationObject = attestationObject;
 			return this;
 		}
@@ -195,7 +195,7 @@ public final class AuthenticatorAssertionResponse extends AuthenticatorResponse
 		 * @param clientDataJSON the client data JSON
 		 * @return the {@link AuthenticatorAssertionResponseBuilder}
 		 */
-		public AuthenticatorAssertionResponseBuilder clientDataJSON(Bytes clientDataJSON) {
+		public AuthenticatorAssertionResponseBuilder clientDataJSON(@Nullable Bytes clientDataJSON) {
 			this.clientDataJSON = clientDataJSON;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/AuthenticatorAttestationResponse.java

@@ -120,7 +120,7 @@ public final class AuthenticatorAttestationResponse extends AuthenticatorRespons
 		 * @param transports the transports
 		 * @return the {@link AuthenticatorAttestationResponseBuilder}
 		 */
-		public AuthenticatorAttestationResponseBuilder transports(List<AuthenticatorTransport> transports) {
+		public AuthenticatorAttestationResponseBuilder transports(@Nullable List<AuthenticatorTransport> transports) {
 			this.transports = transports;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/AuthenticatorSelectionCriteria.java

@@ -133,7 +133,7 @@ public final class AuthenticatorSelectionCriteria {
 		 * @return the {@link AuthenticatorSelectionCriteriaBuilder}
 		 */
 		public AuthenticatorSelectionCriteriaBuilder authenticatorAttachment(
-				AuthenticatorAttachment authenticatorAttachment) {
+				@Nullable AuthenticatorAttachment authenticatorAttachment) {
 			this.authenticatorAttachment = authenticatorAttachment;
 			return this;
 		}
@@ -143,7 +143,7 @@ public final class AuthenticatorSelectionCriteria {
 		 * @param residentKey the resident key
 		 * @return the {@link AuthenticatorSelectionCriteriaBuilder}
 		 */
-		public AuthenticatorSelectionCriteriaBuilder residentKey(ResidentKeyRequirement residentKey) {
+		public AuthenticatorSelectionCriteriaBuilder residentKey(@Nullable ResidentKeyRequirement residentKey) {
 			this.residentKey = residentKey;
 			return this;
 		}
@@ -153,7 +153,8 @@ public final class AuthenticatorSelectionCriteria {
 		 * @param userVerification the user verification requirement
 		 * @return the {@link AuthenticatorSelectionCriteriaBuilder}
 		 */
-		public AuthenticatorSelectionCriteriaBuilder userVerification(UserVerificationRequirement userVerification) {
+		public AuthenticatorSelectionCriteriaBuilder userVerification(
+				@Nullable UserVerificationRequirement userVerification) {
 			this.userVerification = userVerification;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/ImmutablePublicKeyCredentialUserEntity.java

@@ -179,7 +179,7 @@ public final class ImmutablePublicKeyCredentialUserEntity implements PublicKeyCr
 		 * @param displayName the display name
 		 * @return the {@link PublicKeyCredentialUserEntityBuilder}
 		 */
-		public PublicKeyCredentialUserEntityBuilder displayName(String displayName) {
+		public PublicKeyCredentialUserEntityBuilder displayName(@Nullable String displayName) {
 			this.displayName = displayName;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/PublicKeyCredential.java

@@ -176,7 +176,7 @@ public final class PublicKeyCredential<R extends AuthenticatorResponse> implemen
 		 * @param type the type
 		 * @return the PublicKeyCredentialBuilder
 		 */
-		public PublicKeyCredentialBuilder type(PublicKeyCredentialType type) {
+		public PublicKeyCredentialBuilder type(@Nullable PublicKeyCredentialType type) {
 			this.type = type;
 			return this;
 		}
@@ -206,7 +206,8 @@ public final class PublicKeyCredential<R extends AuthenticatorResponse> implemen
 		 * @param authenticatorAttachment the authenticator attachment
 		 * @return the PublicKeyCredentialBuilder
 		 */
-		public PublicKeyCredentialBuilder authenticatorAttachment(AuthenticatorAttachment authenticatorAttachment) {
+		public PublicKeyCredentialBuilder authenticatorAttachment(
+				@Nullable AuthenticatorAttachment authenticatorAttachment) {
 			this.authenticatorAttachment = authenticatorAttachment;
 			return this;
 		}
@@ -217,7 +218,7 @@ public final class PublicKeyCredential<R extends AuthenticatorResponse> implemen
 		 * @return the PublicKeyCredentialBuilder
 		 */
 		public PublicKeyCredentialBuilder clientExtensionResults(
-				AuthenticationExtensionsClientOutputs clientExtensionResults) {
+				@Nullable AuthenticationExtensionsClientOutputs clientExtensionResults) {
 			this.clientExtensionResults = clientExtensionResults;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/PublicKeyCredentialCreationOptions.java

@@ -265,7 +265,7 @@ public final class PublicKeyCredentialCreationOptions {
 		 * @param timeout the timeout
 		 * @return the PublicKeyCredentialCreationOptionsBuilder
 		 */
-		public PublicKeyCredentialCreationOptionsBuilder timeout(Duration timeout) {
+		public PublicKeyCredentialCreationOptionsBuilder timeout(@Nullable Duration timeout) {
 			this.timeout = timeout;
 			return this;
 		}
@@ -297,7 +297,8 @@ public final class PublicKeyCredentialCreationOptions {
 		 * @param attestation the attestation
 		 * @return the PublicKeyCredentialCreationOptionsBuilder
 		 */
-		public PublicKeyCredentialCreationOptionsBuilder attestation(AttestationConveyancePreference attestation) {
+		public PublicKeyCredentialCreationOptionsBuilder attestation(
+				@Nullable AttestationConveyancePreference attestation) {
 			this.attestation = attestation;
 			return this;
 		}
@@ -307,7 +308,8 @@ public final class PublicKeyCredentialCreationOptions {
 		 * @param extensions the extensions
 		 * @return the PublicKeyCredentialCreationOptionsBuilder
 		 */
-		public PublicKeyCredentialCreationOptionsBuilder extensions(AuthenticationExtensionsClientInputs extensions) {
+		public PublicKeyCredentialCreationOptionsBuilder extensions(
+				@Nullable AuthenticationExtensionsClientInputs extensions) {
 			this.extensions = extensions;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/PublicKeyCredentialDescriptor.java

@@ -124,7 +124,7 @@ public final class PublicKeyCredentialDescriptor implements Serializable {
 		 * @param id the id
 		 * @return the {@link PublicKeyCredentialDescriptorBuilder}
 		 */
-		public PublicKeyCredentialDescriptorBuilder id(Bytes id) {
+		public PublicKeyCredentialDescriptorBuilder id(@Nullable Bytes id) {
 			this.id = id;
 			return this;
 		}
@@ -134,7 +134,7 @@ public final class PublicKeyCredentialDescriptor implements Serializable {
 		 * @param transports the transports
 		 * @return the {@link PublicKeyCredentialDescriptorBuilder}
 		 */
-		public PublicKeyCredentialDescriptorBuilder transports(Set<AuthenticatorTransport> transports) {
+		public PublicKeyCredentialDescriptorBuilder transports(@Nullable Set<AuthenticatorTransport> transports) {
 			this.transports = transports;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/PublicKeyCredentialRequestOptions.java

@@ -169,7 +169,7 @@ public final class PublicKeyCredentialRequestOptions implements Serializable {
 		 * @param challenge the challenge
 		 * @return the {@link PublicKeyCredentialRequestOptionsBuilder}
 		 */
-		public PublicKeyCredentialRequestOptionsBuilder challenge(Bytes challenge) {
+		public PublicKeyCredentialRequestOptionsBuilder challenge(@Nullable Bytes challenge) {
 			this.challenge = challenge;
 			return this;
 		}
@@ -190,7 +190,7 @@ public final class PublicKeyCredentialRequestOptions implements Serializable {
 		 * @param rpId the rpId property
 		 * @return the {@link PublicKeyCredentialRequestOptionsBuilder}
 		 */
-		public PublicKeyCredentialRequestOptionsBuilder rpId(String rpId) {
+		public PublicKeyCredentialRequestOptionsBuilder rpId(@Nullable String rpId) {
 			this.rpId = rpId;
 			return this;
 		}
@@ -212,7 +212,8 @@ public final class PublicKeyCredentialRequestOptions implements Serializable {
 		 * @param userVerification the user verification
 		 * @return the {@link PublicKeyCredentialRequestOptionsBuilder}
 		 */
-		public PublicKeyCredentialRequestOptionsBuilder userVerification(UserVerificationRequirement userVerification) {
+		public PublicKeyCredentialRequestOptionsBuilder userVerification(
+				@Nullable UserVerificationRequirement userVerification) {
 			this.userVerification = userVerification;
 			return this;
 		}

webauthn/src/main/java/org/springframework/security/web/webauthn/api/PublicKeyCredentialRpEntity.java

@@ -91,7 +91,7 @@ public final class PublicKeyCredentialRpEntity {
 		 * @param name the name property
 		 * @return the {@link PublicKeyCredentialRpEntityBuilder}
 		 */
-		public PublicKeyCredentialRpEntityBuilder name(String name) {
+		public PublicKeyCredentialRpEntityBuilder name(@Nullable String name) {
 			this.name = name;
 			return this;
 		}
@@ -101,7 +101,7 @@ public final class PublicKeyCredentialRpEntity {
 		 * @param id the id
 		 * @return the {@link PublicKeyCredentialRpEntityBuilder}
 		 */
-		public PublicKeyCredentialRpEntityBuilder id(String id) {
+		public PublicKeyCredentialRpEntityBuilder id(@Nullable String id) {
 			this.id = id;
 			return this;
 		}