jobscheduler/src/main/java/me/tatarka/support/internal/job/JobStore.java
public boolean containsJobId(int jobId) {
        for (int i = mJobSet.size() - 1; i >= 0; i--) {
            JobStatus ts = mJobSet.valueAt(i);
            if (ts.matches(jobId)) {
                return true;
            }
        }
        return false;
    }
public boolean containsJobId(int jobId) {
        for (int i = mJobSet.size() - 1; i >= 0; i--) {
            JobStatus ts = mJobSet.valueAt(i);
            if (ts.matches(jobId)) {
                return true;
            }
        }
        return false;
    }
Whether this jobStatus object already exists in the JobStore.