src/schemas/ands_oai.php
protected function create_dcs_node($set_name, $set_type)
    {
        $this->working_node = $this->addChild($this->working_node, $set_name);
        $this->working_node->setAttribute('type', $set_type);
    }
protected function create_dcs_node($set_name, $set_type)
    {
        $this->working_node = $this->addChild($this->working_node, $set_name);
        $this->working_node->setAttribute('type', $set_type);
    }
protected function create_dcs_node ( $ set_name , $ set_type ) { $ this -> working_node = $ this -> addChild ( $ this -> working_node , $ set_name ) ; $ this -> working_node -> setAttribute ( 'type' , $ set_type ) ; }
RIF-CS node is the content node of RIF-CS metadata node which starts from regObjects.
Each set supportted in RIF-CS has its own content model. The created node will be used as the
root node of this record for following nodes will be created.

\param $set_name string, the name of set. For ANDS, they are Activity, Party and Collection
\param $set_type string, the type of set. For example, Activity can have project as a type.
RIF - CS node is the content node of RIF - CS metadata node which starts from regObjects . Each set supportted in RIF - CS has its own content model . The created node will be used as the root node of this record for following nodes will be created .