nl_tokens: Return whether this criteria is valid as an object inside of an attribute
pl_tokens: function validSubAttrCriteria ( c ) { return _ . isObject ( c ) && ( ! _ . isUndefined ( c . <mask> ) || ! _ . isUndefined ( c . greaterThan ) || ! _ . isUndefined ( c . lessThan ) || ! _ . isUndefined ( c . greaterThanOrEqual ) || ! _ . isUndefined ( c . lessThanOrEqual ) || ! _ . isUndefined ( c [ '<' ] ) || ! _ . isUndefined ( c [ '<=' ] ) || ! _ . isUndefined ( c [ '!' ] ) || ! _ . isUndefined ( c [ '>' ] ) || ! _ . isUndefined ( c [ '>=' ] ) || ! _ . isUndefined ( c . startsWith ) || ! _ . isUndefined ( c . endsWith ) || ! _ . isUndefined ( c . contains ) || ! _ . isUndefined ( c . like ) ) ; }