public Builder setMemberName(final String memberName) {
      if (isBlank(memberName)) {
        throw new IllegalArgumentException("The Server member name must be specified.");
      }
      this.memberName = memberName;
      return this;
    }
Sets the member name of the Server in Geode.

@param memberName a String indicating the member name of this Server in Geode.
@return this Builder instance.
@throws IllegalArgumentException if the member name is invalid.
@see #getMemberName()
geode-core/src/main/java/org/apache/geode/distributed/ServerLauncher.java