FeatureDefinition 
    class FeatureDefinition
A list of features. You must include FeatureName and FeatureType. Valid feature FeatureTypes are Integral, Fractional and String.
Types
Properties
Link copied to clipboard
                  Configuration for your collection.
Link copied to clipboard
                  A grouping of elements where each element within the collection must have the same feature type (String, Integral, or Fractional).
Link copied to clipboard
                  The name of a feature. The type must be a string. FeatureName cannot be any of the following: is_deleted, write_time, api_invocation_time.
Link copied to clipboard
                  The value type of a feature. Valid values are Integral, Fractional, or String.