-val obj_file_of_baseuri: writable:bool -> baseuri:string -> string
-val lexicon_file_of_baseuri: writable:bool -> baseuri:string -> string
-val metadata_file_of_baseuri: writable:bool -> baseuri:string -> string
+val obj_file_of_baseuri:
+ must_exist:bool -> writable:bool -> baseuri:string -> string
+val lexicon_file_of_baseuri:
+ must_exist:bool -> writable:bool -> baseuri:string -> string
+val metadata_file_of_baseuri:
+ must_exist:bool -> writable:bool -> baseuri:string -> string