rename end time property in TSResourceSource

To make it more accurately reflect the meaning, and to not confuse or
associate with the "start" method that start the sub-thread.

src/sgnts/base/base.py

@@ -760,7 +760,7 @@ class TSResourceSource(_TSSource):
             self.__end = self.duration + self.start_time
 
     @property
-    def end(self):
+    def end_time(self):
         """The ending time of the resource"""
         return self.__end
 
@@ -793,9 +793,9 @@ class TSResourceSource(_TSSource):
 
     @property
     def end_offset(self):
-        if self.end is None:
+        if self.end_time is None:
             return float("inf")
-        return Offset.fromsec(self.end - Offset.offset_ref_t0 / Time.SECONDS)
+        return Offset.fromsec(self.end_time - Offset.offset_ref_t0 / Time.SECONDS)
 
     @property
     def t0(self):

tests/test_resource_source.py

@@ -68,7 +68,7 @@ class FakeLiveSource(TSResourceSource):
         super().__post_init__()
 
     def get_data(self):
-        for stream in self.server.stream(self.srcs, self.start_time, self.end):
+        for stream in self.server.stream(self.srcs, self.start_time, self.end_time):
             for channel, block in stream.items():
                 pad = self.srcs[channel]