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Create an EventProperties object with a single property.
Parameters
pair
Pair describing the event property.
Throws
when the property name is not made up of the set (a-z0-9_), or if the property value is not a valid type.
Create an EventProperties object with a many properties.
Parameters
pairs
Pairs describing the event properties.
Throws
when the property name is not made up of the set (a-z0-9_), or if the property value is not a valid type.