- Validation.begin().isNotNull("Field", field).check().is("Field Existing", hasField(field)).isLess("Field Index", getFieldIndex(field), fields.size() - 1).check();
+ checkNotNull(field, "field must not be null");
+ checkArgument(hasField(field), "field must belong to this profile");
+ checkArgument(getFieldIndex(field) < fields.size() - 1, "field index must be < " + (fields.size() - 1));