lessThanOperatorName property
Indicates the operator name required in the query in order to isolate the date property using the less-than operator.
For example, if lessThanOperatorName is closedbefore and the property's name is closeDate, then queries like closedbefore:<value> show results only where the value of the property named closeDate is earlier than <value>. The operator name can only contain lowercase letters (a-z). The maximum length is 32 characters.
Implementation
core.String? lessThanOperatorName;