$eq Equal
$ne Not equal
$lt Less than
$lte Less than or equal to
$gt Greater than
$gte Greater than or equal to
$in Included in an array
$notIn Not included in an array
$contains Contains (case-sensitive)
$notContains Does not contain (case-sensitive)
$containsi Contains
$notContainsi Does not contain
$null Is null
$notNull Is not null
$between Is between
$startsWith Starts with
$endsWith Ends with
$or Joins the filters in an "or" expression
$and Joins the filters in an "and" expression
