@Documented
 @Retention(value=RUNTIME)
 @Target(value={FIELD,METHOD})
public @interface SchemaFieldDescription
POJO field, a Java Bean getter, or an AutoValue getter, the specified description is used
 for the generated schema field.
 For example, say we have a Java POJO with a field that we want in our schema, and we want to add a description for it:
   @DefaultSchema(JavaFieldSchema.class)
   class MyClass {
     public String user;
     @SchemaFieldDescription("The time in years since the user joined our platform")
     public int ageInYears;
   }
 The resulting schema will have fields named "user" and "ageInYears", and the field "ageInYears" will have a description for its meaning.
| Modifier and Type | Required Element and Description | 
|---|---|
| java.lang.String | valueThe description to use for the generated schema field. | 
@Nonnull public abstract java.lang.String value