public String getGetter() {
      return getter;
    }
Returns the name of the getter method for this property as defined by the {@code @AutoValue}
or {@code @AutoBuilder} class. For property {@code foo}, this will be {@code foo} or {@code
getFoo} or {@code isFoo}. For AutoBuilder, the getter in question is the one that will be
called on the built type to derive the value of the property, in the copy constructor.
value/src/main/java/com/google/auto/value/processor/AutoValueishProcessor.java