A_Z_Listing::get_the_item_indices( WP_Post|WP_Term $item )

	protected function get_the_item_indices( $item ) {
		$terms = array();
		$indices = array();
		$index = '';

		if ( $item instanceof WP_Term ) {
			$index = mb_substr( $item->name, 0, 1, 'UTF-8' );
			$indices[ $index ][] = array(
				'title' => $item->name,
				'item' => $item,
			);
			/**
			 * @deprecated Use a_z_listing_item_indices
			 * @see a_z_listing_item_indices
			 */
			$indices = apply_filters_deprecated( 'a_z_listing_term_indices', array( $indices, $item ), '1.0.0', 'a_z_listing_item_indices' );
		} else {
			if ( ! empty( $this->index_taxonomy ) ) {
				$terms = array_filter( wp_get_object_terms( $item->ID, $this->index_taxonomy ) );
			}

			$index = mb_substr( $item->post_title, 0, 1, 'UTF-8' );
			$indices[ $index ][] = array(
				'title' => $item->post_title,
				'item' => $item,
			);

			$term_indices = array_reduce( $terms, function( $indices, $term ) {
				$indices[ mb_substr( $term->name, 0, 1, 'UTF-8' ) ][] = array(
					'title' => $term->name,
					'item' => $term,
				);
				return $indices;
			});

			if ( is_array( $term_indices ) && ! empty( $term_indices ) ) {
				$indices = array_merge( $indices, $term_indices );
			}

			/**
			 * @deprecated Use a_z_listing_item_indices
			 * @see a_z_listing_item_indices
			 */
			$indices = apply_filters_deprecated( 'a_z_listing_post_indices', array( $indices, $item ), '1.5.0', 'a_z_listing_item_indices' );
		} // End if().

		//$indices = array_reduce( $indices, array( $this, 'index_reduce' ) );

		/**
		 * Modify the indice(s) to group this post under
		 *
		 * @param array           $indices The current indices
		 * @param WP_Term|WP_Post $item The item
		 * @param string          $item_type The type of the item
		 */
		$indices = apply_filters( 'a_z_listing_item_indices', $indices, $item, $this->type );
		if ( AZLISTINGLOG ) {
			do_action( 'log', 'Item indices', $indices );
		}
		return $indices;
	}