@VisibleForTesting
	static String createIncompletePartObjectNamePrefix(String objectName) {
		checkNotNull(objectName);

		final int lastSlash = objectName.lastIndexOf('/');
		final String parent;
		final String child;

		if (lastSlash == -1) {
			parent = "";
			child = objectName;
		} else {
			parent = objectName.substring(0, lastSlash + 1);
			child = objectName.substring(lastSlash + 1);
		}
		return parent + (child.isEmpty() ? "" : '_') + child + "_tmp_";
	}
@ VisibleForTesting static String createIncompletePartObjectNamePrefix ( String objectName ) { checkNotNull ( objectName ) ; final int lastSlash = objectName . lastIndexOf ( '/' ) ; final String parent ; final String child ; if ( lastSlash == - 1 ) { parent = "" ; child = objectName ; } else { parent = objectName . substring ( 0 , lastSlash + 1 ) ; child = objectName . substring ( lastSlash + 1 ) ; } return parent + ( child . isEmpty ( ) ? "" : '_' ) + child + "_tmp_" ; }
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