code: @SuppressWarnings("unchecked")
  	@Override
  	public Class<ID> getIdType() {
  		Field idField = MetadataParser.getIdField(getJavaType());
  		return (Class<ID>) idField.getType();
  	}
docs: /*
  (non-Javadoc)
  
  @see org.springframework.data.repository.support.EntityInformation#getIdType()