Creates a context object that may be used to store and retrieve arbitrary values.
If a defaultValue is provided, it will be returned from context.get() when no value has been
set for the context. Otherwise reading this context when no value has been set will throw an
error.
Creates a context object that may be used to store and retrieve arbitrary values.
If a
defaultValueis provided, it will be returned fromcontext.get()when no value has been set for the context. Otherwise reading this context when no value has been set will throw an error.