add doc_meta getter

Author: Mr-Leshiy

rust/signed_doc/src/lib.rs

@@ -14,7 +14,7 @@ mod error;
 mod metadata;
 mod signature;
 
-pub use metadata::{DocumentRef, Metadata, UuidV7};
+pub use metadata::{AdditionalFields, DocumentRef, Metadata, UuidV7};
 pub use signature::KidUri;
 use signature::Signatures;
 
@@ -130,6 +130,12 @@ impl CatalystSignedDocument {
         &self.inner.content
     }
 
+    /// Return document metadata content.
+    #[must_use]
+    pub fn doc_meta(&self) -> &AdditionalFields {
+        self.inner.metadata.extra()
+    }
+
     /// Return a Document's signatures
     #[must_use]
     pub fn signatures(&self) -> &Signatures {

rust/signed_doc/src/metadata/mod.rs

@@ -9,7 +9,7 @@ mod document_ref;
 mod document_type;
 mod document_version;
 
-use additional_fields::AdditionalFields;
+pub use additional_fields::AdditionalFields;
 use anyhow::anyhow;
 pub use catalyst_types::uuid::{V4 as UuidV4, V7 as UuidV7};
 pub use content_encoding::ContentEncoding;