Bug 188027 PasteAction is diabled
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/ContainerContext.java
/**
	 * Gets the semantic-trigger-set for the container definition. It is either
	 * be <code>PropertyDefn</code> or <code>SlotDefn</code>.
	 * 
	 * @return the semantic-trigger-set if container definition is found,
	 *         otherwise null
	 */
	public SemanticTriggerDefnSet getTriggerSetForContainerDefn( )
	{
		IContainerDefn defn = getContainerDefn( );
		if ( defn instanceof PropertyDefn )
		{
			return ( (PropertyDefn) defn ).getTriggerDefnSet( );
		}
		if ( defn instanceof SlotDefn )
		{
			return ( (SlotDefn) defn ).getTriggerDefnSet( );
		}
		return null;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see java.lang.Object#equals(java.lang.Object)
	 */
	public boolean equals( Object obj )
	{
		if ( !( obj instanceof ContainerContext ) )
			return false;
		ContainerContext infoObj = (ContainerContext) obj;