in clearcase-common/src/jetbrains/buildServer/vcs/clearcase/CCHistory.java [100:110]
public boolean equals(final Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
final CCHistory ccHistory = (CCHistory)o;
if (myFile != null ? !myFile.equals(ccHistory.myFile) : ccHistory.myFile != null) return false;
if (myVersion != null ? !myVersion.equals(ccHistory.myVersion) : ccHistory.myVersion != null) return false;
return true;
}