renames IsOfEmptyProof to IsEmptyProof

proof.go

@@ -106,8 +106,8 @@ func NewAbsenceProof(proofStart, proofEnd int, proofNodes [][]byte, leafHash []b
 	return Proof{proofStart, proofEnd, proofNodes, leafHash, ignoreMaxNamespace}
 }
 
-// IsOfEmptyProof checks whether the proof corresponds to an empty proof as defined in NMT specifications https://github.com/celestiaorg/nmt/blob/master/docs/spec/nmt.md.
-func (proof Proof) IsOfEmptyProof() bool {
+// IsEmptyProof checks whether the proof corresponds to an empty proof as defined in NMT specifications https://github.com/celestiaorg/nmt/blob/master/docs/spec/nmt.md.
+func (proof Proof) IsEmptyProof() bool {
 	return proof.start == proof.end && len(proof.nodes) == 0
 }
 
@@ -156,7 +156,7 @@ func (proof Proof) VerifyNamespace(h hash.Hash, nID namespace.ID, leaves [][]byt
 
 	isEmptyRange := proof.start == proof.end
 	if isEmptyRange {
-		if proof.IsOfEmptyProof() && len(leaves) == 0 {
+		if proof.IsEmptyProof() && len(leaves) == 0 {
 			rootMin := namespace.ID(MinNamespace(root, nIDLen))
 			rootMax := namespace.ID(MaxNamespace(root, nIDLen))
 			// empty proofs are always rejected unless 1) nID is outside the range of

proof_test.go

@@ -75,7 +75,7 @@ func TestVerifyNamespace_EmptyProof(t *testing.T) {
 	}
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			require.True(t, tt.args.proof.IsOfEmptyProof() == tt.isValidEmptyProof)
+			require.True(t, tt.args.proof.IsEmptyProof() == tt.isValidEmptyProof)
 			if got := tt.args.proof.VerifyNamespace(tt.args.hasher, tt.args.nID, tt.args.leaves, tt.args.root); got != tt.want {
 				t.Errorf("VerifyNamespace() = %v, want %v", got, tt.want)
 			}