Update ERC-7527: Update erc-7527.md

Merged by EIP-Bot.

ERCS/erc-7527.md

@@ -143,6 +143,14 @@ interface IERC7527Agency {
      */
     function getStrategy() external view returns (address app, Asset memory asset, bytes memory attributeData);
 
+    /**
+     * @dev Returns the premium and fee of wrapping.
+     * @param data The data to encode to calculate the premium and fee of wrapping.
+     * @return premium The premium of wrapping.
+     * @return fee The fee of wrapping.
+     */
+    function getWrapOracle(bytes memory data) external view returns (uint256 premium, uint256 fee);
+
     /**
      * @dev Returns the premium and fee of unwrapping.
      * @param data The data to encode to calculate the premium and fee of unwrapping.
@@ -152,12 +160,10 @@ interface IERC7527Agency {
     function getUnwrapOracle(bytes memory data) external view returns (uint256 premium, uint256 fee);
 
     /**
-     * @dev Returns the premium and fee of wrapping.
-     * @param data The data to encode to calculate the premium and fee of wrapping.
-     * @return premium The premium of wrapping.
-     * @return fee The fee of wrapping.
+     * @dev OPTIONAL - This method can be used to improve usability and clarity of Agency, but interfaces and other contracts MUST NOT expect these values to be present.
+     * @return the description of the agency, such as how `getWrapOracle()` and `getUnwrapOracle()` are calculated.
      */
-    function getWrapOracle(bytes memory data) external view returns (uint256 premium, uint256 fee);
+    function description() public view returns (string);
 }
 ```
 
@@ -216,6 +222,8 @@ Token ID can be specified in `data` parameter of `mint` function.
 
 ### Factory Interface 
 
+OPTIONAL - This interface can be used to deploy App and Agency, but interfaces and other contracts MUST NOT expect this interface to be present.
+
 If a factory is needed to deploy bounded App and Agency, the factory SHALL implement the following interface:
 
 ```