lib/components/dataInterface/connectors/file/DataSource.php
public function setFileSource($value)
    {
        if (isset($this->module->sourceFiles[$value])) {
            $this->_fileSource = $this->module->sourceFiles[$value];
        } else {
            $this->_fileSource = false;
        }
    }
public function setFileSource($value)
    {
        if (isset($this->module->sourceFiles[$value])) {
            $this->_fileSource = $this->module->sourceFiles[$value];
        } else {
            $this->_fileSource = false;
        }
    }
Set file source.

@param Source|bool $value file source or false if not found