public synchronized boolean isInitialized(long a, long b) {
		return defined.encloses(ULongSpan.span(a, b));
	}
Check if a range is completely initialized

<p>
The given range is interpreted as closed, i.e., [a, b].

@param a the lower-bound, inclusive, of the range
@param b the upper-bound, inclusive, of the range
@return true if all indices in the range are initialized, false otherwise
Ghidra/Framework/Emulation/src/main/java/ghidra/generic/util/datastruct/SemisparseByteArray.java