@Nullable fun getDefaultListOfInteger(key: String!): MutableList<Int!>? (source)
Get a default value from this configuration as a list of integers.
key - String!: A configuration key (e.g. "server.address.ports").
InvalidConfigurationPropertyTypeException - If the default value is not a list of integers.
Return
MutableList<Int!>?: The value, or null if no default was available.