public String getPattern() {
        return this.pattern;
    }
<p>
A regular expression that defines the log pattern. A log pattern can contain as many as 50 characters, and it
cannot be empty. The pattern must be DFA compatible. Patterns that utilize forward lookahead or backreference
constructions are not supported.
</p>

@return A regular expression that defines the log pattern. A log pattern can contain as many as 50 characters,
        and it cannot be empty. The pattern must be DFA compatible. Patterns that utilize forward lookahead or
        backreference constructions are not supported.
aws-java-sdk-applicationinsights/src/main/java/com/amazonaws/services/applicationinsights/model/LogPattern.java