DefiniteDescriptorKey: provide additional methods for converting to a DescriptorPublicKey

Author: apoelstra

src/descriptor/key.rs

@@ -777,6 +777,21 @@ impl DefiniteDescriptorKey {
     pub fn full_derivation_path(&self) -> bip32::DerivationPath {
         self.0.full_derivation_path()
     }
+
+    /// Reference to the underlying `DescriptorPublicKey`
+    pub fn as_descriptor_public_key(&self) -> &DescriptorPublicKey {
+        &self.0
+    }
+
+    /// Converts the definite key into a generic one
+    pub fn into_descriptor_public_key(self) -> DescriptorPublicKey {
+        self.0
+    }
+
+    /// Converts the definite key into a generic one
+    pub fn to_descriptor_public_key(&self) -> DescriptorPublicKey {
+        self.0.clone()
+    }
 }
 
 impl FromStr for DefiniteDescriptorKey {
@@ -842,6 +857,12 @@ impl From<DefiniteDescriptorKey> for DescriptorPublicKey {
     }
 }
 
+impl<'a> From<&'a DefiniteDescriptorKey> for &'a DescriptorPublicKey {
+    fn from(d: &'a DefiniteDescriptorKey) -> Self {
+        &d.0
+    }
+}
+
 #[cfg(test)]
 mod test {
     use core::str::FromStr;