wp_resolve_block_style_variation_ref_values( array $variation_data, array $theme_json )

37function wp_resolve_block_style_variation_ref_values( &$variation_data, $theme_json ) {38	foreach ( $variation_data as $key => &$value ) {39		// Only need to potentially process arrays.40		if ( is_array( $value ) ) {41			// If ref value is set, attempt to find its matching value and update it.42			if ( array_key_exists( 'ref', $value ) ) {43				// Clean up any invalid ref value.44				if ( empty( $value['ref'] ) || ! is_string( $value['ref'] ) ) {45					unset( $variation_data[ $key ] );46				}47 48				$value_path = explode( '.', $value['ref'] ?? '' );49				$ref_value  = _wp_array_get( $theme_json, $value_path );50 51				// Only update the current value if the referenced path matched a value.52				if ( null === $ref_value ) {53					unset( $variation_data[ $key ] );54				} else {55					$value = $ref_value;56				}57			} else {58				// Recursively look for ref instances.59				wp_resolve_block_style_variation_ref_values( $value, $theme_json );60			}61		}62	}63}