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# Delegate PluginCallback

Plugin callback delegate.

###### Namespace: Apache.Ignite.Core.Plugin

###### Assembly: Apache.Ignite.Core.dll

##### Syntax

    public delegate long PluginCallback(IBinaryRawReader input, IBinaryRawWriter output);

##### Parameters

Type | Name | Description
--- | --- | ---
IBinaryRawReader | input | Input reader. May be null.
IBinaryRawWriter | output | Output writer. May be null.

##### Returns

Type | Description
--- | ---
System.Int64 | Result code.