template <typename FidlTable>
class WireTableExternalBuilder
|WireTableExternalBuilder| is a low-level helper class for building tables.
They're created by calling the static
|Build(fidl::ObjectView
<fidl
::WireTableFrame
<T
>>)| on a FIDL wire table type,
passing in an externally managed table frame object view.
Table members are set by passing |ObjectView|s into a builder method named
for the member.
To get the built table call |Build()|. The builder must not be used after
|Build()| has been called.