This function takes the following parameters:
The DN of the entry to be read.
A NULL terminated array of attribute types to return from entries that match filter. If you specify a NULL, all attributes will be returned.
The address of a Slapi_Entry pointer to receive the entry if it is found.
A plug-in or component identifier. This value can be obtained from the SLAPI_PLUGIN_IDENTITY field of the parameter block that is passed to your plug-in initialization function.