This is the package name you choose when you define your Adminstration Configuration. From the example on the Light Admin page:
At the top of the class below you would have something like:
package com.YOUR_APPLICATION.config;
public class UserAdministration extends AdministrationConfiguration<User> {
public EntityMetadataConfigurationUnit configuration( EntityMetadataConfigurationUnitBuilder configurationBuilder ) {
return configurationBuilder.nameField( "firstname" ).build();
}
public ScreenContextConfigurationUnit screenContext( ScreenContextConfigurationUnitBuilder screenContextBuilder ) {
return screenContextBuilder
.screenName( "Users Administration" ).build();
}
public static FieldSetConfigurationUnit listView( final FieldSetConfigurationUnitBuilder fragmentBuilder ) {
return fragmentBuilder
.field( "firstname" ).caption( "First Name" )
.field( "lastname" ).caption( "Last Name" )
.build();
}
And then you config looks like this:
<context-param>
<param-name>light:administration:base-package</param-name>
<param-value>com.YOUR_APPLICATION.config</param-value>
</context-param>