code: public Parameter<?> getParameter(String name) {
          Collection<Parameter<?>> extnParameters = getParameters();
  
          for (Parameter<?> extnParameter : extnParameters) {
              if (extnParameter.name().equals(name)) {
                  return extnParameter;
              }
          }
          
          return null;
      }
docs: Returns the {@link Parameter} defined in this
  {@link WebSoketExtension} with the specified name.
  
  @param name    parameter's name
  @return Parameter