Describes the 'visibility' of a symbol with respect to the proto import
system. Symbols can only be imported when the visibility rules do not prevent
it (ex: local symbols cannot be imported). Visibility modifiers can only set
on message and enum as they are the only types available to be referenced
from other files.
Describes the 'visibility' of a symbol with respect to the proto import system. Symbols can only be imported when the visibility rules do not prevent it (ex: local symbols cannot be imported). Visibility modifiers can only set on
messageandenumas they are the only types available to be referenced from other files.