CB

With PHP 5.6 it's possible to use splat operators in combination with variable function calls. See below.

FROM:
call_user_func_array( array( &$pluginClassInstance, $method ), $args )
TO:
$pluginClassInstance->$method( ...$args )

FROM:
call_user_func_array( $method, $args )
TO:
$method( ...$args )

This also then allows support for reference splat variable usage in the called function expanding plugin function call usage significantly.