modules/jooby-apitool/src/main/java/org/jooby/apitool/ApiTool.java
public ApiTool modify(final Predicate<RouteMethod> matcher,
      final Consumer<RouteMethod> customizer) {
    this.customizer.put(matcher, customizer);
    return this;
  }
public ApiTool modify(final Predicate<RouteMethod> matcher,
      final Consumer<RouteMethod> customizer) {
    this.customizer.put(matcher, customizer);
    return this;
  }
Modify one or more route method who matches the filter. Work as a API to fix possible missing
metadata.

@param matcher Route matcher.
@param customizer Customizer.
@return This tool.