public Builder sdkId(String sdkId) {
            this.sdkId = sdkId;
            return this;
        }
Set the SDK service ID trait used to control client class names.

<p>Must match the following regex: {@code ^[a-zA-Z][a-zA-Z0-9]*( [a-zA-Z0-9]+)*$}

@param sdkId SDK service ID to set.
@return Returns the builder.
smithy-aws-traits/src/main/java/software/amazon/smithy/aws/traits/ServiceTrait.java