bug: XMPSchemaMediaManagement setManagedFrom

[Lindberg, Chris J.]

Hi,

While trying to decide on how to implement qualifiers I came across what 
appears to be a copy and paste error in the XMPSchemaMediaManagment 
setManagedFrom method. Instead of using prefix + ":ManagedFrom" it uses prefix 
+ ":DerivedFrom"

Here is the 1.6.0 source:

/**
* Set or clear the managed from value.
*
 * @param resource The resource reference to set.
*
 * @see XMPSchemaMediaManagement#createManagedFrom()
*/
public void setManagedFrom( ResourceRef resource )
{
   XMLUtil.setElementableValue( schema, prefix + ":DerivedFrom", resource );
}

Chris