Bug 161401 [Viewers] Tweak ColumnViewer-API
- Rename getRowPart(Point point) => getViewerRow() - Rename getCell(Point point) => getViewerCell() - Rename setViewerColumn(final int columnIndex, ViewerColumn viewer) => setupEditingSupport - Make setupEditingSupport() private no one from external needs to use this API to set the EditingSupport for an ViewerColumn
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
return null;
		}
		if (getTable().getColumnCount() == 0)
			return getTable();
		return getTable().getColumn(columnIndex);
	}
	/**
	 * Set the TableColumnViewerPart at columnIndex to be viewerPart.
	 * 
	 * @param viewerPart
	 * @param columnIndex
	 */
	public void setColumnPart(ViewerColumn viewerPart, int columnIndex) {
		TableColumn column = getTable().getColumn(columnIndex);
		column.setData(ViewerColumn.COLUMN_VIEWER_KEY, viewerPart);
	}
	/**
	 * Starts editing the given element.
	 * 
	 * @param element
	 *            the element
	 * @param column
	 *            the column number
	 */
	public void editElement(Object element, int column) {
		tableViewerImpl.editElement(element, column);
	}
	/*
	 * (non-Javadoc)
	 *