timeoutMillis
Parses a timeout value in milliseconds from the JSON object. If the field is missing, returns the provided default value. If the field is present but not a long integer, a JsonConfigError.InvalidType is thrown.
Return
The parsed timeout value in milliseconds, or the default if the field is missing.
Parameters
default
The default timeout value to return if the field is missing (default is 15,000 milliseconds).