code: public static String dropWhile(GString self, @ClosureParams(value=SimpleType.class, options="char") Closure condition) {
          return dropWhile(self.toString(), condition).toString();
      }
docs: A GString variant of the equivalent CharSequence method.
  
  @param self      the original GString
  @param condition the closure that while continuously evaluating to true will cause us to drop elements from
  the front of the original GString
  @return the shortest suffix of the given GString such that the given closure condition
  evaluates to true for each element dropped from the front of the CharSequence
  @see #dropWhile(CharSequence, groovy.lang.Closure)
  @since 2.3.7