private static Schema getTableSchema(Field valueField) {
		if (valueField != null) {
			// Create default table schema with a value column and an long Address key
			Field[] fields = new Field[] { valueField };
			return new Schema(0, "Address", fields, SCHEMA_FIELD_NAMES);
		}

		// Table contains only a long Address key (i.e., void property map)
		return new Schema(0, "Address", NO_SCHEMA_FIELDS, NO_SCHEMA_FIELD_NAMES);
	}
Create the default propertyTable.
This method may be called by add property methods if propertyTable is null.
@param valueField property value field type (null corresponds to void map table)
@throws IOException if IO error occurs
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/properties/PropertyMapDB.java