public boolean getBooleanMemberOrDefault(String memberName) {
        return getBooleanMemberOrDefault(memberName, false);
    }
Gets the member with the given name, and if present, expects it to
be a boolean, otherwise returns false.

@param memberName Name of the member to get.
@return Returns the boolean value or false if not found.
@throws ExpectationNotMetException if the member is found and not a boolean.
smithy-model/src/main/java/software/amazon/smithy/model/node/ObjectNode.java