For read operations: the original language code from the provider. For write operations: fallback value used when value is omitted or "unmapped_value". You must ensure this matches the provider's format.
SkillsLanguageSourceValueUnion.CreateStr(/* values here */);SkillsLanguageSourceValueUnion.CreateNumber(/* values here */);SkillsLanguageSourceValueUnion.CreateBoolean(/* values here */);SkillsLanguageSourceValueUnion.CreateSkillsSourceValueLanguage(/* values here */);SkillsLanguageSourceValueUnion.CreateArrayOfAny(/* values here */);