WC-NG question: ctx->wc_ctx docs

Reading in svn_client.h, I see:

  /** An optional working copy context for the client operation to use.
   * This is initialized by svn_client_create_context() and should never
   * be @c NULL.
   *
   * @since New in 1.7. */
  svn_wc_context_t *wc_ctx;

Can someone help me interpret this? If the wc_ctx pointer is "optional",
then what (if not NULL) is its value when the structure initializer "opts
out" on this field?

-- 
C. Michael Pilato <cmpilato_at_collab.net>
CollabNet   <>   www.collab.net   <>   Distributed Development On Demand
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