public function many($accessor, $foreignClass, $foreignColumn, $selfColumn)
{
return $this->relations[$accessor] = new HasMany($accessor, array('type' => Relationship::HAS_MANY, 'self_schema' => $this->getCurrentSchemaClass(), 'self_column' => $selfColumn, 'foreign_schema' => $this->resolveSchemaClass($foreignClass), 'foreign_column' => $foreignColumn));
}