def p_declaration(self, p):
p[<NUM_LIT:0>] = p[<NUM_LIT:1>] if isinstance(p[<NUM_LIT:1>], list) else [p[<NUM_LIT:1>]]<EOL>
declaration                : variable_decl
                                       | property_decl
                                       | block_decl
                                       | mixin_decl
                                       | call_mixin
                                       | import_statement