protected String getHttpMethodAction(String method) {
        String lc = method.toLowerCase();
        String resolved = getHttpMethodActions().get(lc);
        return resolved != null ? resolved : method;
    }
Determines the corresponding application action that will be performed on the filtered resource based on the
specified HTTP method (GET, POST, etc.).

@param method to be translated into the verb.
@return The string equivalent verb of the method.
web/src/main/java/org/apache/shiro/web/filter/authz/HttpMethodPermissionFilter.java