protected BigDecimal resolveNumberExclusiveMinimum(MemberScope<?, ?> member) {
        return this.resolveNumberMinimum(member, "(");
    }
Determine (exclusive) numeric minimum for the given member or its associated getter/field from the {@link ApiModelProperty} annotation's
{@code allowedValues}.

@param member targeted field/method
@return exclusive numeric minimum (or {@code null})
jsonschema-module-swagger-1.5/src/main/java/com/github/victools/jsonschema/module/swagger15/SwaggerModule.java