private function get_recipes_taxonomy_matches( $required_post_taxonomy, $post ) {
		$matched = array();
		$post_id = $post->ID;
		foreach ( $this->matched_recipes as $recipe_id => $recipe ) {
			foreach ( $recipe['triggers'] as $trigger ) {
				$trigger_id = absint( $trigger['ID'] );
				if ( ! isset( $required_post_taxonomy[ $recipe_id ] ) ) {
					continue;
				}
				if ( ! isset( $required_post_taxonomy[ $recipe_id ][ $trigger_id ] ) ) {
					continue;
				}
				// if any taxonomy
				if ( '0' === (string) $required_post_taxonomy[ $recipe_id ][ $trigger_id ] ) {
					$post_terms = $this->get_all_post_tax( $post_id, $post->post_type, $recipe_id, $trigger_id );
					foreach ( $post_terms as $term ) {
						$this->terms_list[ $recipe_id ][ $trigger_id ][ $term->term_id ] = $term->name;
					}
					$matched[] = $recipe_id;
					continue;
				}
				// let's check if the post has any taxonomy in the selected taxonomy
				$post_terms = $this->get_taxonomy( $post_id, $required_post_taxonomy[ $recipe_id ][ $trigger_id ] );
				if ( empty( $post_terms ) ) {
					continue;
				}
				$matched[] = $recipe_id;
				foreach ( $post_terms as $term ) {
					$this->terms_list[ $recipe_id ][ $trigger_id ][ $term->term_id ] = $term->name;
				}
			}
		}
		return array_unique( $matched );
	}