How to fix bug
create new ProjectOptions with LoadTime = UtcNow for each code generation test
refactor code generation tests
Merge pull request #1 from vasily-kirichenko/fix-tests-with-same-language-service-instance

create new ProjectOptions with LoadTime = UtcNow for each code generation test
Merge pull request #491 from OkayX6/fix-tests-with-same-language-service-instance

What explains the tests bugs