private ProgramModule getOrCreateChildModule(ProgramModule m, String moduleName)
			throws Exception {
		Group[] children = m.getChildren();
		for (Group group : children) {
			if (group.getName().equals(moduleName)) {
				return (ProgramModule) group;
			}
		}
		return m.createModule(moduleName);
	}
Creates a sting data type instance at the specified address, repeated {@code N} times.

@param addressString address.
@param dt {@link AbstractStringDataType} string type to place at address.
@param n repeat count.
Ghidra/Features/Base/src/main/java/ghidra/program/database/ProgramBuilder.java