public int getColumnIndex(Class<?> columnClass) {
		DynamicTableColumn<ROW_TYPE, ?, ?> column =
			getColumnForDefaultColumnIdentifier(columnClass);
		return tableColumns.indexOf(column);
	}
Returns the column index of the given column class

@param columnClass the class for the type of DynamicTableColumn you want to find.
@return the column index for the specified DynamicTableColumn. -1 if not found.
Ghidra/Framework/Docking/src/main/java/docking/widgets/table/GDynamicColumnTableModel.java