public Builder setJavaOuterClassname(String javaOuterClassname) {
            DescriptorProtos.FileOptions.Builder optionsBuilder = DescriptorProtos.FileOptions.newBuilder();
            optionsBuilder.setJavaOuterClassname(javaOuterClassname);
            mFileDescProtoBuilder.mergeOptions(optionsBuilder.build());
            return this;
        }
Builds a dynamic schema

@return the schema object
core/src/main/java/kafka/automq/table/deserializer/proto/schema/DynamicSchema.java