code: def build_response_signature(self, saml_response, relay_state, sign_algorithm=OneLogin_Saml2_Constants.RSA_SHA1):
          
          return self.__build_signature(saml_response, relay_state, 'SAMLResponse', sign_algorithm)
docs: Builds the Signature of the SAML Response.
          :param saml_request: The SAML Response
          :type saml_request: string
  
          :param relay_state: The target URL the user should be redirected to
          :type relay_state: string
  
          :param sign_algorithm: Signature algorithm method
          :type sign_algorithm: string