public void setStringProperty(String address, String propertyName, String value)
			throws Exception {
		tx(() -> {
			PropertyMapManager pm = program.getUsrPropertyManager();
			StringPropertyMap propertyMap = pm.getStringPropertyMap(propertyName);
			if (propertyMap == null) {
				propertyMap = pm.createStringPropertyMap(propertyName);
			}
			propertyMap.add(addr(address), value);
		});
	}
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