That's because it is using the same name as in the OpenAPI spec. So that if you need to investigate more about any of these security schemes you can just copy and paste it to find more information about it.

///

The `oauth2_scheme` variable is an instance of `OAuth2PasswordBearer`, but it is also a "callable".

It could be called as:

	}

	if schema.err == nil {
		schema.setRelation(relation)
		switch relation.Type {
		case HasOne:
			schema.Relationships.HasOne = append(schema.Relationships.HasOne, relation)
		case HasMany:
			schema.Relationships.HasMany = append(schema.Relationships.HasMany, relation)
		case BelongsTo:
			schema.Relationships.BelongsTo = append(schema.Relationships.BelongsTo, relation)
		case Many2Many:

     */
    public static Schema newW3cXmlSchema(final Source schema) {
        assertArgumentNotNull("schema", schema);
        return newSchema(SchemaFactoryUtil.newW3cXmlSchemaFactory(), schema);
    }

    /**
     * URLからW3C XML Schemaのための{@link Schema}を生成します。
     *
     * @param schema
     *            W3C XML SchemaのURL。{@literal null}であってはいけません
     * @return {@link Schema}
     */

	}

	checkUserSchema(t, user)
}

func checkUserSchema(t *testing.T, user *schema.Schema) {
	// check schema
	checkSchema(t, user, schema.Schema{Name: "User", Table: "users"}, []string{"ID"})

	// check fields
	fields := []schema.Field{

			Option:  "WITH PARSER parser_name",
			Fields: []schema.IndexOption{{Field: &schema.Field{Name: "Name6"}}, {
				Field:      &schema.Field{Name: "Age"},
				Expression: "ABS(age)",
			}},
		},
		"idx_id": {
			Name:   "idx_id",
			Fields: []schema.IndexOption{{Field: &schema.Field{Name: "MemberNumber"}}, {Field: &schema.Field{Name: "OID", UniqueIndex: "idx_oid"}}},
		},
		"idx_oid": {
			Name:   "idx_oid",

			return
		}

		if db.Statement.Schema != nil {
			for _, c := range db.Statement.Schema.DeleteClauses {
				db.Statement.AddClause(c)
			}
		}

		if db.Statement.SQL.Len() == 0 {
			db.Statement.SQL.Grow(100)
			db.Statement.AddClauseIfNotExists(clause.Delete{})

			if db.Statement.Schema != nil {

					for _, field := range stmt.Schema.PrimaryFields {
						_, isZero = field.ValueOf(stmt.Context, stmt.ReflectValue.Index(i))
						if !isZero {
							break
						}
					}
				}

				if !isZero {
					_, primaryValues := schema.GetIdentityFieldValuesMap(stmt.Context, stmt.ReflectValue, stmt.Schema.PrimaryFields)
					column, values := schema.ToQueryValues("", stmt.Schema.PrimaryFieldDBNames, primaryValues)

				case reflect.Slice:
					queryFields = db.Statement.ReflectValue.Type().Elem() != db.Statement.Schema.ModelType
				}
			}

			if queryFields {
				stmt := gorm.Statement{DB: db}
				// smaller struct
				if err := stmt.Parse(db.Statement.Dest); err == nil && (db.QueryFields || stmt.Schema.ModelType != db.Statement.Schema.ModelType) {

	"gorm.io/gorm/clause"
	"gorm.io/gorm/schema"
	"gorm.io/gorm/utils"
)

// BeforeCreate before create hooks
func BeforeCreate(db *gorm.DB) {
	if db.Error == nil && db.Statement.Schema != nil && !db.Statement.SkipHooks && (db.Statement.Schema.BeforeSave || db.Statement.Schema.BeforeCreate) {
		callMethod(db, func(value interface{}, tx *gorm.DB) (called bool) {
			if db.Statement.Schema.BeforeSave {

			for _, rel := range dep.Schema.Relationships.Relations {
				if rel.Field.IgnoreMigration {
					continue
				}
				if c := rel.ParseConstraint(); c != nil && c.Schema == dep.Statement.Schema && c.Schema != c.ReferenceSchema {
					dep.Depends = append(dep.Depends, c.ReferenceSchema)
				}

				if rel.Type == schema.HasOne || rel.Type == schema.HasMany {
					beDependedOn[rel.FieldSchema] = true
				}