code: function normalizePosition(value) {
  	if (typeof value === 'string') {
  		value = value.split(',');
  	}
  	if (_.isArray(value)) {
  		if (value.length !== 2) {
  			throw new FieldError('invalid_type', 'Must be array in form [ long, lat ]');
  		}
  		value[0] = numberType.normalize(value[0], { type: 'number', min: -180, max: 180 });
  		value[1] = numberType.normalize(value[1], { type: 'number', min: -90, max: 90 });
  	}
  	validatePosition(value);
  	return value;
  }
docs: Normalizes a [ long, lat ] value