@Override
	public List<MethodMetadata> parseAndValidateMetadata(Class<?> targetType) {
		List<MethodMetadata> metadatas = delegate.parseAndValidateMetadata(targetType);
		metadatas.forEach(metadata -> METADATA_MAP
				.put(targetType.getName() + metadata.configKey(), metadata));
		return metadatas;
	}
map key is constructed by ClassFullName + configKey. configKey is constructed by
{@link feign.Feign#configKey}
spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-sentinel/src/main/java/com/alibaba/cloud/sentinel/feign/SentinelContractHolder.java