Why is this an issue?

There are several reasons for a method not to have a method body:

• It is an unintentional omission, and should be fixed to prevent an unexpected behavior in production.
• It is not yet, or never will be, supported. In this case an exception should be thrown.
• The method is an intentionally-blank override. In this case a nested comment should explain the reason for the blank override.

Noncompliant code example

func doNothing() { // Noncompliant
}

Compliant solution

func doNothing() {
  // Do nothing because of X and Y.
}