JIRA: https://jira.spring.io/browse/INT-3495 **Cherry-pick to 4.0.x & 3.0.x** INT-3495 Add `error-channel` to `<tail-i-c-a>` JIRA: https://jira.spring.io/browse/INT-3495 * Fix `AbstractEndpoint` JavaDoc
JIRA: https://jira.spring.io/browse/INT-3495 **Cherry-pick to 4.0.x & 3.0.x** INT-3495 Add `error-channel` to `<tail-i-c-a>` JIRA: https://jira.spring.io/browse/INT-3495 * Fix `AbstractEndpoint` JavaDoc