src/Mail/mime.php
function getParam($name)
    {
        return isset($this->_build_params[$name]) ? $this->_build_params[$name] : null;
    }
function getParam($name)
    {
        return isset($this->_build_params[$name]) ? $this->_build_params[$name] : null;
    }
Get build parameter value

@param string $name Parameter name

@return mixed Parameter value
@access public
@since 1.6.0