code: public static Validator<CharSequence> minLength(@NonNull final CharSequence errorMessage,
                                                      final int minLength) {
          return new MinLengthValidator(errorMessage, minLength);
      }
docs: Creates and returns a validator, which allows to validate texts to ensure, that they have at
  least a specific length.
  
  @param errorMessage
  The error message, which should be shown, if the validation fails, as an instance of
  the type {@link CharSequence}. The error message may not be null
  @param minLength
  The minimum length a text must have as an {@link Integer} value. The minimum length
  must be at least 1
  @return @return The validator, which has been created, as an instance of the type {@link
  Validator}