Java SDK delay examples with wrong code

Public documentation about retry strategies from Java SDK:

https://developer.couchbase.com/documentation/server/current/sdk/java/handling-error-conditions.html#story-h2-12 

Has wrong example Java code:

Functionality like this is a great candidate to be generic and encapsulated, so that's what we did with RetryBuilder. If you are already using Java 8, the code becomes more condensed as well:

SAMPLE_CODE

Here are the variations for linear, exponential and random delays:

Linear:

SAME_SAMPLE_CODE

Exponential:

SAME_SAMPLE_CODE

Random:

SAME_SAMPLE_CODE