public function addWorkflowDefinition(Identifier $id)
{
if ($id->getType() != c\T::WORKFLOWDEFINITION) {
throw new \Exception(S_SPAN . "The identifier is unacceptable." . E_SPAN);
}
if ($this->hasWorkflowDefinition($id->getId())) {
return $this;
}
$this->workflow_definitions[] = $id;
return $this;
}
