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															@@ -132,7 +132,7 @@ 
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															     grpc_metadata_array_init(&_headers); 
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															     grpc_metadata_array_init(&_headers); 
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															     _op.data.recv_initial_metadata = &_headers; 
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															     _op.data.recv_initial_metadata = &_headers; 
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															     if (handler) { 
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															     if (handler) { 
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															-      // Prevent reference cycle with handler 
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															+      // Prevent reference cycle with _handler 
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															       __weak typeof(self) weakSelf = self; 
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															       __weak typeof(self) weakSelf = self; 
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															       _handler = ^{ 
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															       _handler = ^{ 
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															         __strong typeof(self) strongSelf = weakSelf; 
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															         __strong typeof(self) strongSelf = weakSelf; 
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															@@ -164,7 +164,7 @@ 
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															     _op.op = GRPC_OP_RECV_MESSAGE; 
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															     _op.op = GRPC_OP_RECV_MESSAGE; 
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															     _op.data.recv_message = &_receivedMessage; 
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															     _op.data.recv_message = &_receivedMessage; 
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															     if (handler) { 
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															     if (handler) { 
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															-      // Prevent reference cycle with handler 
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															+      // Prevent reference cycle with _handler 
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															       __weak typeof(self) weakSelf = self; 
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															       __weak typeof(self) weakSelf = self; 
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															       _handler = ^{ 
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															       _handler = ^{ 
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															         __strong typeof(self) strongSelf = weakSelf; 
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															         __strong typeof(self) strongSelf = weakSelf; 
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															@@ -197,7 +197,7 @@ 
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															     grpc_metadata_array_init(&_trailers); 
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															     grpc_metadata_array_init(&_trailers); 
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															     _op.data.recv_status_on_client.trailing_metadata = &_trailers; 
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															     _op.data.recv_status_on_client.trailing_metadata = &_trailers; 
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															     if (handler) { 
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															     if (handler) { 
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															-      // Prevent reference cycle with handler 
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															+      // Prevent reference cycle with _handler 
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															       __weak typeof(self) weakSelf = self; 
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															       __weak typeof(self) weakSelf = self; 
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															       _handler = ^{ 
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															       _handler = ^{ 
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															         __strong typeof(self) strongSelf = weakSelf; 
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															         __strong typeof(self) strongSelf = weakSelf; 
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