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17 lines
512 B
Markdown
17 lines
512 B
Markdown
PacketExtension
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===============
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The static `from(Packet)` Method
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--------------------------------
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Every PacketExtension class must have a static `from()` method that retrieves that extension for a given Stanza (if any).
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Sample Code
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```java
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public static RSMSet from(Packet) {
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return packet.getExtension(ELEMENT, NAMESPACE);
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}
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```
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Sometimes certain PacketExtension's are only found in one stanza type, in that case, specify the parameter type. For example `public static CarbonExtension getFrom(Message)`.
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