serde = { version = "1.0", features = ["derive"], optional = true }
serde_json = { version = "1.0", optional = true }
chunked_transfer = { version = "1.4", optional = true }
serde = { version = "1.0", features = ["derive"], optional = true }
serde_json = { version = "1.0", optional = true }
chunked_transfer = { version = "1.4", optional = true }