Code Duplication    Length = 3-3 lines in 2 locations

source/Threema/Console/Common.php 2 locations

@@ 81-83 (lines=3) @@
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	 * @return null|string
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	 */
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	public static function getPublicKey($stringWithPrefix = null) {
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		if(null !== $stringWithPrefix && substr($stringWithPrefix, 0, strlen(Constants::PUBLIC_KEY_PREFIX)) == Constants::PUBLIC_KEY_PREFIX) {
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			return substr($stringWithPrefix, strlen(Constants::PUBLIC_KEY_PREFIX));
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		}
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		return null;
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	}
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@@ 107-109 (lines=3) @@
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	 * @return null|string
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	 */
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	public static function getPrivateKey($stringWithPrefix = null) {
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		if(null !== $stringWithPrefix && substr($stringWithPrefix, 0, strlen(Constants::PRIVATE_KEY_PREFIX)) == Constants::PRIVATE_KEY_PREFIX) {
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			return substr($stringWithPrefix, strlen(Constants::PRIVATE_KEY_PREFIX));
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		}
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		return null;
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	}
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}