4 - api - exports the publisher interface for clients and providers to import
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5 - features - used for managing the feature repository for publisher
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6 - installer - provides a simple install script
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7 - provider - provides an implementation of the publisher api, this implementation assumes the controller has a single identity for publishing to DMAAP message router
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8 - sample.client - a dummy client that posts a simple message to a configured topic during its initialization
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