GetBuildGoPaths returns the list of Go path directories.

GetIdlType is used to return the idl type.

Hessian2PostProcessing is responsible for performing hessian2-related post-processing.

IsWindows determines whether the current operating system is Windows.

PathExist is used to judge whether the path exists in file system.

SearchGoMod searches go.mod from the given directory (which must be an absolute path) to the root directory.