code: public static Context getContextByName(JSONObject parameters, String parameterName) throws ApiException {
  		return getContextByName(parameters.getString(parameterName));
  	}
docs: Returns the {@code Context} with the given name. The context's name is obtained from the given {@code parameters}, whose
  name is the value of {@code parameterName}.
  <p>
  The parameter must exist, that is, it should be a mandatory parameter, otherwise a runtime exception is thrown.
  
  @param parameters the parameters that contain the context's name
  @param parameterName the name of the parameter used to obtain the context's name
  @return the {@code Context} with the given name
  @throws ApiException If the context with the given name does not exist
  @since 2.4.3
  @see #getContextByName(String)
  @see JSONObject#getString(String)