The edition of the proto file, which is an opaque string.
messageType
All top-level definitions in this file.
name
file name, relative to root of source tree
package
e.g. "foo", "foo.bar", etc.
publicDependency
Indexes of the public imported files in the dependency list above.
sourceCodeInfo
This field contains optional information about the original source code.
You may safely remove this entire field without harming runtime
functionality of the descriptors -- the information is needed only by
development tools.
syntax
The syntax of the proto file.
The supported values are "proto2", "proto3", and "editions".
If edition is present, this value must be "editions".
weakDependency
Indexes of the weak imported files in the dependency list.
For Google-internal migration only. Do not use.