Constant AVRO_VALUE_SCHEMA_JSON 

pub const AVRO_VALUE_SCHEMA_JSON: &str = r#"{"type":"record","name":"Value","namespace":"durable_workflow.protocol","fields":[{"name":"value","type":["null",{"type":"record","name":"BooleanValue","fields":[{"name":"boolean","type":"boolean"}]},{"type":"record","name":"LongValue","fields":[{"name":"long","type":"long"}]},{"type":"record","name":"DoubleValue","fields":[{"name":"double","type":"double"}]},{"type":"record","name":"BytesValue","fields":[{"name":"bytes","type":"bytes"}]},{"type":"record","name":"StringValue","fields":[{"name":"string","type":"string"}]},{"type":"record","name":"ArrayValue","fields":[{"name":"items","type":{"type":"array","items":"Value"}}]},{"type":"record","name":"MapValue","fields":[{"name":"entries","type":{"type":"map","values":"Value"}}]}]}]}"#;