oauth2/oauth2-jose/src/main/java/org/springframework/security/oauth2/jwt/NimbusReactiveJwtDecoder.java
public void setClaimSetConverter(Converter<Map<String, Object>, Map<String, Object>> claimSetConverter) {
		Assert.notNull(claimSetConverter, "claimSetConverter cannot be null");
		this.claimSetConverter = claimSetConverter;
	}
public void setClaimSetConverter(Converter<Map<String, Object>, Map<String, Object>> claimSetConverter) {
		Assert.notNull(claimSetConverter, "claimSetConverter cannot be null");
		this.claimSetConverter = claimSetConverter;
	}
Use the following {@link Converter} for manipulating the JWT's claim set

@param claimSetConverter the {@link Converter} to use