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* I have an existing Adaptor that provides full data pushes - how do I make it support incremental pushes?
-Implement `com/google/enterprise/adaptor/PollingIncrementalLister` which has a single method `getModifiedDocIds(DocIdPusher pusher)` . When initializing the Adaptor, register with `AdaptorContext.setPollingIncrementalLister(yourLister)`.
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+Implement `com/google/enterprise/adaptor/PollingIncrementalLister` which has a single method `getModifiedDocIds(DocIdPusher pusher)` . When initializing the Adaptor, register with `AdaptorContext.setPollingIncrementalLister(yourLister)`.
+
+* In the connector code, how do I check if GSA is giving if-modified-since?
+
+https://code.google.com/p/plexi/source/browse/src/com/google/enterprise/adaptor/Request.java#34
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+* In the connector code, how do I give the last-modified to the GSA?
+
+https://code.google.com/p/plexi/source/browse/src/com/google/enterprise/adaptor/Response.java#75
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