chore: cleans up api surface

Signed-off-by: Vincent Biret <[email protected]>

Author: baywet

src/Microsoft.OpenApi/Extensions/OpenApiTypeMapper.cs

@@ -70,7 +70,7 @@ internal static string ToFirstIdentifier(this JsonSchemaType schemaType)
         /// </summary>
         /// <param name="schemaType"></param>
         /// <returns></returns>
-        public static string ToSingleIdentifier(this JsonSchemaType schemaType)
+        internal static string ToSingleIdentifier(this JsonSchemaType schemaType)
         {
             return schemaType.ToIdentifiersInternal().Single();
         }

test/Microsoft.OpenApi.Readers.Tests/V31Tests/OpenApiSchemaTests.cs

@@ -16,6 +16,7 @@
 using Microsoft.OpenApi.Writers;
 using Xunit;
 using Microsoft.OpenApi.Exceptions;
+using System;
 
 namespace Microsoft.OpenApi.Readers.Tests.V31Tests
 {
@@ -561,7 +562,7 @@ public void ReturnSingleIdentifierWorks()
             var types = JsonSchemaType.Integer | JsonSchemaType.Null;
 
             Assert.Equal("integer", type.ToSingleIdentifier());
-            Assert.Throws<OpenApiException>(() => types.ToSingleIdentifier());
+            Assert.Throws<InvalidOperationException>(() => types.ToSingleIdentifier());
         }
     }
 }

test/Microsoft.OpenApi.Tests/PublicApi/PublicApi.approved.txt

@@ -194,7 +194,6 @@ namespace Microsoft.OpenApi.Extensions
         public static string[]? ToIdentifiers(this Microsoft.OpenApi.Models.JsonSchemaType? schemaType) { }
         public static Microsoft.OpenApi.Models.JsonSchemaType ToJsonSchemaType(this string identifier) { }
         public static Microsoft.OpenApi.Models.JsonSchemaType? ToJsonSchemaType(this string[] identifier) { }
-        public static string ToSingleIdentifier(this Microsoft.OpenApi.Models.JsonSchemaType schemaType) { }
     }
 }
 namespace Microsoft.OpenApi.Interfaces