public function setSourceFile($var)
    {
        GPBUtil::checkString($var, True);
        $this->source_file = $var;
        $this->has_source_file = true;

        return $this;
    }
public function setSourceFile($var)
    {
        GPBUtil::checkString($var, True);
        $this->source_file = $var;
        $this->has_source_file = true;

        return $this;
    }
public function setSourceFile ( $ var ) { GPBUtil :: checkString ( $ var , True ) ; $ this -> source_file = $ var ; $ this -> has_source_file = true ; return $ this ; }
Identifies the filesystem path to the original source .proto.

Generated from protobuf field <code>optional string source_file = 2;</code>
@param string $var
@return $this
Identifies the filesystem path to the original source . proto .