src/MultipartRequest.php
public function addMultipartParams( $params ) {
		$this->checkMultipartParams( $params );
		$this->multipartParams = array_merge( $this->multipartParams, $params );
		return $this;
	}
public function addMultipartParams( $params ) {
		$this->checkMultipartParams( $params );
		$this->multipartParams = array_merge( $this->multipartParams, $params );
		return $this;
	}
public function addMultipartParams ( $ params ) { $ this -> checkMultipartParams ( $ params ) ; $ this -> multipartParams = array_merge ( $ this -> multipartParams , $ params ) ; return $ this ; }
Add extra multipart parameters.

Each key of the array passed in here must be the name of a parameter already set on this
request object.

@param mixed[] $params The multipart parameters to add to any already present.

@return $this
Add extra multipart parameters .