Returns an immutable instance of [PromptOptimizationJobLog].
public PromptOptimizationJobLog build()Returns an immutable instance of [PromptOptimizationJobLog]. Further updates to this [Builder] will not mutate the returned instance. The following fields are required:
.id()
.createdAt()
.jobId()
.logType()
.message()
IllegalStateException: if any required field is unset.