@Override
	public String getFieldName() {
		String fieldName = dtc.getFieldName();
		if (fieldName == null || fieldName.length() == 0) {
			return dtc.getDefaultFieldName();
		}
		return fieldName;
	}
Create a field

@param root the root data unit
@param parent the parent component, possibly the root
@param index the index of this component in its parent
@param address the minimum address of this component
@param dtc the data type component, giving the index, data type, and length
Ghidra/Debug/Framework-TraceModeling/src/main/java/ghidra/trace/database/listing/DBTraceDataCompositeFieldComponent.java